Make a face.
Really, make a face that is a little strange.
Now go get a mirror from the tool cabinet and set it on your table and draw yourself making that strange face in pen. Even a ball point pen will work, but pen and ink is even better. For expediting the process, don't ask me for a uniball please, but if you have one (or a micron) you can use that if you wish.
While we're at it, why not fill the page? Why not try a different style than you normally use? Why not do something different than I would expect?
Why not have fun?!